Motor-cycle starter.



E. H: HAHN.

1,272,947. Patented ,11115 16, 1918.

2 SHEETS-SHEET 1.

Earl Eija/m;

E. H. HAHN.

MOTOR CYCLE STARTER.

APPUCATION mto NOV. 3. 1916.

1,272,947. Patented J uly 16, 1918.

2 SHEETS-SHEET 2.

QWQBLMMA fiEarHHaAn,

EABL H. HAHN, OEMALLARD, IOWA.

r MOTOR-GYCLE STARTER.

Specification of Letters Patent.' k Patented J u ly 16, 1918.

` ;Application filed November 3, 1916. Serial No.:129,345.

To all whom "it may concern: 1

Be it `known .that I, EARL HAHN, a citizenof the United States, residing at Mall-ard, Palo Alto county, Iowa, have inve'nted new and useful '-Improvements 'in Motor- Cycle Starters, of which the following is a specification.

My invention relates to new and useful A improvements in motorcycle starters, 10

and has for its object to provide an eXceedin-gly simple and effective device of `this character, which 'may be ;readily a and `quickly applied to motorcycles "of -difierent constructions *and more particularly any motorcycleprovided 15 with a c unter-shaft clutch 'or ;a rear, wheel clutch, which `is started by the use 'of-the ped'als. T.-; v

Another object of the invention is reprovide am'otorcycle starter which will-besimr ple in construction hav-ing very {few parts, which. will be relatively -inexpensive :in 'the 'cost of `manufacture, whichwillbe strong and durable, more: reliable thani-most start- *ers in use at the present-time because there are -no valves -t`o open or 'close, and -which will be much more simple in operation.

A further "object of" the invention: is -to ::provide a' motorcycle starter jwhe'reby. the motor may be given its initial start 'while both 'of-the motorcycle 'wheels are *on the ground, ?and which -will also permit 'the use of the ;pedals "for :propelling the motorcycle should any of the parts become: broken, disarranged, whereby the motor 'could :not 'be -us'ed'as -the propellingpower.

. A still further-*object -of 'the :invention is 'to' provide 3;' device of "this character, wherei'n 'all gears an'd'the `'neutral 'counter-shaft 'are eliminated "an'd which will' 'require less -"elfort on the part 'of the operator' in start- -i ngthe mbton a i i'th' these ends inz-view-,Tthis invention consists in the details of construction and combination 'of elements hereinafter set forth' and: then specifically designated by the claims. v

In "order `that those skilled' the ?art to which this invention appertains, mayunderstand'how-to make 'and use the: same, I will ?describe 'its construction in deta-il, referring by numeralstothe ac'comp'anyin drawings formin'g 'a .part of' this speci cation, in which- Figure`1 ,:is a sideelevationaofxa ;motorcycle showing my improvement applied Well known manner. **preferably 'consists ofthe serrated rim.11

thereto with the dog or pawl in 'engagement with the -ratchet wheel ready for use. ,Fi-g. 2, is a fragmentary side elevation of the'motorcycle 'showing the pawl 'held out 'of engagement with the'ratchet wheel.

Fig.' 3, is an enlarged perspective View *of one-'half of 'the pawl carrying clamp, showing aconstruction which may be utilized for 'starting 'the'motor from the same side *of the vehicle on which the starter is mounted. Fig. 4, 1s an e'nlar'ged fragmentary sectional View, looking outward, of the clutch showing :my invention applied thereto.

ig. 5, is a plan View thereof. Fig.. 6, is a fragmentary section at the ;line 6-6 of Fig; '52; 'and Fig. 7, is a section at the line 7'-7 of Fig. -1-. r

In carrying out' my `invention as here emibodied Qrepresentsa motorcycle of any desired `construction or well known make, provided with 'a 'motor or engine 3, a clutch 4 connected by a clutch rod 5 with the clutch a crank hanger 8 carrying the 'pedals 9.

On the outer member or casing of the clutch 4 '-is mounted a 'ratchet wheel or ring 10' ;secured in position in any suitable and This 'ratchet wheel provided with an integr-al annular fiange 12 -proj'ecting ther'efrom at right angles thereto and provided with suitable holes or perforations `whereby any desirable fastening means may be used to' secure the ratchet wheel to the clutch such as screws or their equivalent,

The ratchet wheel or ring is adapted to be engaged byia dog or pawl 14:, the nose 15 of which is slightly curved inward so as to more readily engage the serrations or teeth, while 'the opposite end of said dog is provided with a knob or hemispherical projec- 'tion 16 for engagement with a pin catch to hold .the'nose of said dog out of engagement .with the ratchet wheel as will be hereinafter described. j V

The pawl or dog l l'is pivotallymounted intermediate its ends upon'the reduced end 'of a suitable trunnion or short shaft 17 formed integral with one or the inner memlever 6', a chain guard'? covering the chain v 1 'connect ng the clutch and engine shaft, and

said fastening means 'as here represented be- .ing'rlvet's 13.

ber 1'8'iof the "clamp 19. The dog is held in a said ratchetdog to engagethe ratchet wheel.

on the outer end of the trunnion 17 held in place against, accidental e displacementi by means of a cotter-pin 21, a washer 22 being interposed between said nut right angled extension 23 the of which is parallel with the and to this extension or spring outer A portion trunnion 17, contactis seopposite end of said spring being secured to a lug 25 formed integral with the dog. The lug` 25 is .on that side of the pivot point of the dog opposite the nose 15, so thatthe"action of said spring normally forces the nose 15 into engagementwith the ratchet wheel. The clamp 19 consists of two membe'rs'lS I and 26identical in cross section, and 'each 'bers of the clamp as the outside membem the r com'prises a hanger' encircling portion or body 27 with opposite projecting fianges 28 provided with suitable openings 29 for the reception of screws or bolts 30 or theirequivalent. .The clamp 19 is adapted to surround the 'crank hanger 8, and' is held' securely against accidental displacement" by ,suitable set screws 31' screwed into one of the meminner ends of said set screws engaging the a .portion of the .crankhanger, which if found desirable may be spotted after the prop the clamp has been located. r I

In order that the ratchet dog or pawl 14 may beheld out of engagement with the rathetwheel when the starter is not in use, I provide a spring'catch'32 formed of suitable resilient material having' a cam 'surface 33 at its outer or free end and provided to the rear of the cam surface with a socket or' cavity 34 for the reception of the knob or hemispherical projection 16 of the'dog in' Fig. 2. This spring secured in any suitable manner to the chain guard 7 and is positioned to suit the operator of the motorcycle, so' that the pedals may be held in any desired position.

As here shown, this spring catch is secured to the chain guard 7 and heldin position by suitable bolts 35 which pass through catch through the chain guard and through a 'backingvplate *or strip 36, said bolts having nuts 37 threaded therer on foruholding the* parts together.

V In practice when it is desired to start the motor or engine the operator applies the desired pressure to'the'pedal on the side of the motorcycle opposite that on whichthe starter is mounted, starters'generally .being mounted upon the left-handside, which will cause the ratchet dog orpawl. 14 tobe dis-V engaged from the spring catch 32 at which time the spring 24 will cause thenose of Then-bir forcing down on the right 'hand pedal, the ratchet wheel 10 will be caused to `revolve",--which will' .transmit 'motion and the .dog,` With the trunnion 17 is formedan integral" er position for therewith to the shaft ofthe engine, thereby giving. said engine its initial start; When the engine is being started, the clutchlever v 6 is .thrown forward, so as to unclutch the rear wheel from' the engine. if the motor is notstarted on the first downward throw of the right-hand pedal, said pedal is rc- I, b 4 ;turned to.;its normal position, the ratchet *cured' one end of thehelical spring 24, the

dog ridesover the serrations of' the ratchet wheel and sald pe'dal givenanotherdownward movement. As soon'as the ,motor oi engine has been*` started, the'l'eft-ha'nd pedal 'additional pressure *uponfisaid -pedahsaid =knob or projection willslide. into thejsocket 34: causing the nose 15 of the ratchet dog to be disengaged from* the ratchetwheel. a

If for any 'reason, 'such as an impa1red e 331of the i engine, 'theoperator desires touse'the'pedals I r for propelling the motorcycle it 'is only necessary'to set the 'clutch in the proper *position, and then removethe *clutch *rod* 5 and the spring catch'32, 'at ?which 'time *the pedals mayberevolvedso that power may-be transmitted to therear wheel ofthe"motorcycle,`

after the manner of a, bicycle. 1 a -Where the operator ofa -"motorcycle does *notcare for a" pedalon-each side and desires to start the motor from the left hand side, r I

I form` an extension 3 8 with the outside `clamp member ls, said extension being of any desired 'length, so as to project thede- "sired distance beyond' the bearing'point of the crank hanger in the` direction" opposite the part *carrying `the pedal'and the' outer end of this extension is'provided' with a' threaded hole 39, Whereby a pedalm'ay be :attached theretoL 4 r Ofcourse I .donot wish to be limited* to shown', .as these may a the exact details here be varied` within the limits of the' appended claims without departing from the spirit of myinvention. H i

One of these variations 'orja modification 'in the 'construction of my device would be the making of the trunnion `17 r integral with the crank hangeri8,"so'that'the'sections 18 'and -19 of the clamp with its bolts and.. set

be much shorter than 'those used at'the present time. V

r I Having thus fully described my invention,

'What Ivclaim asnew and `useful', is 1. The combination *withza memberrto be -rotated, a crank hanger* carrying pedals and screws'would beeliminatedgand where the aguard, of a ratchet wheel secured to the V r member, ,a *clamp adaptedto 'be secured to the crank hanger, a trunnion or shortsha'ft formed integral therewith, an integral right angled extension formed with said trunnion, a pawl or dog pivotally mounted on said trunnion, having a nose at one end for engaging the ratchet wheel and provided at the other end with a knob or projection, a lug formed with the dog, means mounted on the trunnion for preventing the displacement of the dog, a spring connected with the right angled extension and lug for normally forcing the nose of the dog into engagement with the ratchet wheel, and a spring catch secured t0 the guard, said catch having a cam surface at its free end and a socket to the rear thereof, the knob or projection on the dog adapted to register with said socket for holding the dog out of engagement with the ratchet wheel.

2. In a motorcycle starter, the combination with a clutch and crank hanger, of a ratchet wheel on said clutch, a clamp comprising two members adapted to be secured to the crank hanger, an extension formed with the outer member adapted to project in the opposite direction to the hanger, said extension having a threaded hole therein for the reception of a pedal, a trunnion formed with the inner member, 'a dog mounted on said trunnion adapted to engage the ratchet wheel, a spring for normally forcing said dog into engagement with said ratchet wheel, and means for holding the said dog out of engagement with the ratchet wheel.

3. The combination with a member to be rotated of a ratchet wheel secured to said member, a crank hanger, a clamp consisting of two coperating members detachably secured to the crank hanger, a trunnion formed integral with one of the members of said clamp, a pawl or dog journaled on said trunnion and adapted to engage the ratchet wheel, a right angled extension formed integral with the trunnion with its outer portion parallel with said trunnion, a spring attached to said extension and to the dog for normally forcing the nose of said dog to` ward the ratchet wheel and means located' in the path of travel of the dog in one direction, whereby the nose of said dog may be held out of engagement with the ratchet wheel.

In testimony whereof, I have hereunto affixed my signature.

EARL H. HAHN.

copies of this patent may be obtained for five sents'each, by addressing the Commissioner of mints. Washington, D. 0." 

